/*
 * jQuery Hotkeys Plugin
 * Copyright 2010, John Resig
 * Dual licensed under the MIT or GPL Version 2 licenses.
 *
 * Based upon the plugin by Tzury Bar Yochay:
 * http://github.com/tzuryby/hotkeys
 *
 * Original idea by:
 * Binny V A, http://www.openjs.com/scripts/events/keyboard_shortcuts/
*/

(function (jQuery) {

    jQuery.hotkeys = {
        version: "0.8",

        specialKeys: {
            8: "backspace", 9: "tab", 13: "return", 16: "shift", 17: "ctrl", 18: "alt", 19: "pause",
            20: "capslock", 27: "esc", 32: "space", 33: "pageup", 34: "pagedown", 35: "end", 36: "home",
            37: "left", 38: "up", 39: "right", 40: "down", 45: "insert", 46: "del",
            96: "0", 97: "1", 98: "2", 99: "3", 100: "4", 101: "5", 102: "6", 103: "7",
            104: "8", 105: "9", 106: "*", 107: "+", 109: "-", 110: ".", 111: "/",
            112: "f1", 113: "f2", 114: "f3", 115: "f4", 116: "f5", 117: "f6", 118: "f7", 119: "f8",
            120: "f9", 121: "f10", 122: "f11", 123: "f12", 144: "numlock", 145: "scroll", 191: "/", 224: "meta"
        },

        shiftNums: {
            "`": "~", "1": "!", "2": "@", "3": "#", "4": "$", "5": "%", "6": "^", "7": "&",
            "8": "*", "9": "(", "0": ")", "-": "_", "=": "+", ";": ": ", "'": "\"", ",": "<",
            ".": ">", "/": "?", "\\": "|"
        }
    };

    function keyHandler(handleObj) {
        // Only care when a possible input has been specified
        if (typeof handleObj.data !== "string") {
            return;
        }

        var origHandler = handleObj.handler,
            keys = handleObj.data.toLowerCase().split(" ");

        handleObj.handler = function (event) {
            // Don't fire in text-accepting inputs that we didn't directly bind to
            if (this !== event.target && (/textarea|select/i.test(event.target.nodeName) ||
                    event.target.type === "text")) {
                return;
            }

            // Keypress represents characters, not special keys
            var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[event.which],
                character = String.fromCharCode(event.which).toLowerCase(),
                key, modif = "", possible = {};

            // check combinations (alt|ctrl|shift+anything)
            if (event.altKey && special !== "alt") {
                modif += "alt+";
            }

            if (event.ctrlKey && special !== "ctrl") {
                modif += "ctrl+";
            }

            // TODO: Need to make sure this works consistently across platforms
            if (event.metaKey && !event.ctrlKey && special !== "meta") {
                modif += "meta+";
            }

            if (event.shiftKey && special !== "shift") {
                modif += "shift+";
            }

            if (special) {
                possible[modif + special] = true;

            } else {
                possible[modif + character] = true;
                possible[modif + jQuery.hotkeys.shiftNums[character]] = true;

                // "$" can be triggered as "Shift+4" or "Shift+$" or just "$"
                if (modif === "shift+") {
                    possible[jQuery.hotkeys.shiftNums[character]] = true;
                }
            }

            for (var i = 0, l = keys.length; i < l; i++) {
                if (possible[keys[i]]) {
                    return origHandler.apply(this, arguments);
                }
            }
        };
    }

    jQuery.each(["keydown", "keyup", "keypress"], function () {
        jQuery.event.special[this] = {add: keyHandler};
    });

})(jQuery);

ns.ready(function () {
    //热键插件
    ns.hotkeys = {
        el: "[data-hotkeys]",
        attr: "hotkeys",
        attrType: "hotkeys-type",
        defaultType: "click",
        bind: function (scope) {
            $(scope).find(ns.hotkeys.el).each(function (i, n) {
                n = $(n);
                var code = n.data(ns.hotkeys.attr);

                $(document).bind("keydown", code, function () {
                    var type = n.data(ns.hotkeys.attrType);
                    type = type || ns.hotkeys.defaultType;

                    switch (type) {
                        case "click":
                            n.click();
                            break;
                        case "dblclick":
                            n.dblclick();
                            break;
                        case "focus":
                            n.focus();
                            break;
                        case "blur":
                            n.blur();
                            break;
                        case "select":
                            n.select();
                            break;
                        case "change":
                            n.change();
                            break;
                        case "submit":
                            n.submit();
                            break;
                    }
                    return false;
                });
            });
        },
        unbind: function (scope) {
            $(scope).find(ns.hotkeys.el).each(function (i, n) {
                var code = $(n).attr(ns.hotkeys.attr);

                $(document).unbind("keydown", code);
            });
        }
    }

    function handle(target) {

    }
});